Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Church Slavonic сладъкъ
Proto-Balto-Slavic *salHdus (derived)
Proto-Indo-European *seh₂l- (derived)
Proto-Slavic *soldъkъ (inherited)

Old Church Slavonic сладость (suffix)
Latvian salds (cognate)
Russian сладкий (borrowed)